JEE Math Practice Question
A line parallel to the straight line 2x – y = 0 is tangent to the hyperbola $${{{x^2}} \over 4} - {{{y^2}} \over 2} = 1$$ at the point $$\left( {{x_1},{y_1}} \right)$$. Then $$x_1^2 + 5y_1^2$$ is equal to :
- A.5
- B.6
- C.10
- D.8
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